#include<bits/stdc++.h>
#define int long long

using namespace std;

signed main() {
	int w;
	cin >> w;
	while(w -- ) {
		int a[10];
		cin >> a[1] >> a[2] >> a[3] >> a[4];
		int p = min(a[1], a[2]);
		p = min({p, a[3], a[4]});
		for(int i = 1; i <= 4; i ++ ) {
			a[i] -= p;
		}
		int t = min(a[1] + a[4], a[2] + a[3]);
		if(t % 2 == 1) {
			cout << "kou" << endl;
		} else {
			cout << "yukari" << endl;
		}
	}
	return 0;
}

